package easy;

public class Solution_705 {

    private boolean[] array = new boolean[1000001];

    public void MyHashSet() {

    }

    public void add(int key) {
        array[key] = true;
    }

    public void remove(int key) {
        array[key] = false;
    }

    public boolean contains(int key) {
        return array[key];
    }

    public static void main(String[] args) {
        Solution_705 model = new Solution_705();
        System.out.println(1<<7);
    }
}
